Mammut Altitude Down 5-Season Sleeping Bag: -22 Degree Down

So warm Mammut made another season.

If there were a fifth season colder than winter, then Mammut's Altitude Down 5-Season Sleeping Bag would be warm enough. The warmest bag in Mammut's massive collection, the Altitude Down thrives in conditions as cold as -22 degrees Fahrenheit. Mammut fabricated it for rowdy expeditions, with a waterproof, breathable shelterTX membrane and durable nylon fabrics to fend off winter's wrath.  For warmth, Mammut stuffed the Altitude in the lightest, loftiest, most packable down insulation that the Mammoth-branded company has to offer. There's a removable, fleece lining near the foot section because toes are generally the first to go when it comes to frostbite. 

  • Mammut's warmest sleeping bag built for harsh expeditions
  • 800-fill down ensures warmth in -22F degree temperatures
  • Waterproof, breathable shelterTX membrane shields off windy snow
  • Removable fleece lining adds warmth in the foot section
  • Draft tubes cover full-zip and adjustable hood to seal out breezes
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